Gastight closure



Aug. 3, 1937. G. F. JAUBERT GAsTIGHT CLOSURE Filed Maron 6, 1934 TTORNEY.

l It has already been proposed to cause the air, pneumatic tube 3| of circular transverse section, 10

Patented Aug. 3, 1937 z .UNITED STATI-:s PATENT ol-"FiceA Application March 6, 1934, Serial No. 714,272 In France December 19, 1933 4 Claims. (Cl. Ztl- 69) My invention relates to closed chambers and in full in a practical installation in Fig. 2, and is more particularly to chambers or rooms in which adapted to close and seal an enclosure such as a means are provided for the production of a reshelter or the like, which is capable of supportspirable atmosphere, in order to render said ing and conserving a certain increase of pres- 5 chambers habitable as safe shelters. sure above the atmospheric, ranging from, say, 5

Specifically, the present invention comprises 5 to 10 mm..in a water column. means for securing the sealing of closed cham- In the partition or wall 25, the door 30 is tted bers or rooms fed by means of an artiiicial atinto the opening therein, and has a flange or pemosphere. ripheral frame 34 projecting therefrom, While la when vitiated by the respiration of the occupants is imprisoned between the channel pieces 32, 33, ofla closed room or chamber, to pass through puriattached to the partition 25, the said tube being fying plants and to receive afterwards a conpreferably surrounded for at least 270 of its secvenient addition of oxygen. Such arrangements, tion,vas shown in Fig. 1, by said pieces thus ensurl5 however, require an exact sealing of the rooms or ing in a. simpley manner that it will beheld in a 15 chambers thus provided with an articial atmossuitable position.

phere, in order to prevent said atmosphere to be The tube 3| has a suitable device for inflation spoiled by gas or mixture of gas which could which may be-formed, for example, by a valve happen to be sent from outside into said chamber. passing through one of the channels 32, 33. Pref- My invention, which remedies above drawbacks, erably. however, this valve could be arranged in comprises tight doors fitted with a. pneumatic that part of the tube 3| with which the frame 34 sealing device, said pneumatic device being conof the door 30 comes into contact, at the same stituted by a simple tube of rubber lled with time arranging in this framing 34 in a position air and located in a peripheral cavity provided corresponding to the placing of the valve menin the framework of the door and making a gastioned, a channel coming from a reservoir of 25 tight joint between the door and the framework liuid under pressure, thus automatically ensuring of same, thus securing an absolute tightness to that the sealing pressure will be set `-up in the the entering doors. interior of the pipe 3|, as soon as the door is In order to allow the excess of air to make its closed. escape out of the considered chamber or room Inworder to ensure the gas tight closing of the 30 without, however, allowing any introduction of openings formed in the wall of the shelter, the external air or atmosphere into said room, a conrebate 32 xed on the partition 25 of this shelter venient. conduit is provided for such escape of frames the whole of the opening arranged in this, vitiated air in excess, a hydraulic joint being partition, which can be blocked up by the door 35 provided in said conduit for preventing any in- 30. This latter. mounted on hinges 42, is tted 35 troduction or external air or atmosphere inside with closing bolts 43, of any desired number, suitsaid room or chamber. tably distributed round the periphery of this door In the accompanying drawing forming part and controlled by means of a transmission such hereof as 44 by an operating handle 45' arranged on each 4,0 Fig. 1 is a transverse section of a form of conside of the door. 40 struction of a sealing device for a door made one of the bolts 43 is arranged in such a way according t0 my inventionas to control the opening of a valve 46 which auto- Figs. 2, 3 and 4 are, respectively, an elevation. 4 mummy determines, as Soon as the door is a' Vertical Section on une III-III of Fig' 2 and closed, the supply of compressed air to the interior 45 a transverse section on line IV-IV in Flg. 2, of a t. ht door mbodying the invention and m of the tube 3| by a pipe 41 suitably connected toa 45 gas 1g .e y source of compressed air or other gas, not shown ende tft); rgglgealif tight closure for a cham' on the drawing, and when the door is to be er, s e e Figs. 5 and 6 are, respectively, an elevation and gpenihetganegnlitf vlet; a partial section of a detail of control means for .y p g 50 the 00L t frelehaixi by air; orice 1. d t n he I h i WS the Same reference nu.. e nven on can app 1e 0 a cases W re mlalggg; tg; same parts, it is desired to maintain man enclosed chamber,

In the practice of my invention, the door which Sealed O r Otherwise. a respirable atmosphere or is shownv in fragmentary section in Fig. 1 is shown one of any determined composition. 55

now fully described my invention, I' claim:

Llnahingeddoorformingaclosure foran opening in the wall of a chamber or shelter, including a door stop and a ,stationary resilient pneumatic tubelining the opening about said door adjacent to said stop and exposing at least a part ot the crou'sectional circumference to contact with the door when the latter is closed, the combination oi' a4 movable bolt upon the door for retaining the same in closed position at will, a catch disposed in a nxed position exteriorly of the-door upon the door opening and cooperating with the bolt to iorm closure means for the door and pneumatic control means mounted in a stationary position at the door opening adjacent to said door stop and to said door in closed position ot the latter for supplying compressed air from the source ot air pressure to said pneumatic tube and being disposed in proximity to said bolt so as to be operated by the same through said catch to cause innation of the pneumatic tube in said closed position of the door upon extension o! said bolt towards said control means while guided by said catch, said control means being also capable of defiating said tube to the atmosphere upon withdrawal of the bolt, there being manual means 'taln the door in closed position and also t0 withdraw said bolt and release the door so as to allow the same to be opened, and said catch forming the sole guide means and locking means for the bolt exteriorly oi' the contour ot the door.

2. In a hinged door forming a closure for an opening'in the wall ci a chamber or' shelter, includinga door stop and a stationary, resilient, pneumatic tube lining the opening about said door adjacent to said door stop, and exposing at least a part of the cross-sectional circumference to contact with the door when the latter is closed, there being a bolt on the door to. retain it closed and a peripherall seat portion upon the door against which the tube takes in closed position of said door, the door tending to simultaneously engage against said door stop and against said tube and be locked between said tube and doorstopontheonehandandsaidbolt on the other hand when the door is locked, the combination oi' means for supplying and controlling the supply of air to the tube, a nxed hollow catch disposed adjacent to said door upon saiddoor opening in such a position as tobe clear o! the door when it swings open and a pneumatic cou-V trol means disposed upon one side of the door opening and both connected to an air 'pressure supply and to said stationary pneumatic tube so as to be capable oi' controlling the supply oi' compressed air tothe pneumatic tube and also the deilation thereof to the atmosphere, said bolt upon said door being disposedadiacent to said pneumatic control means andv said ilxed catch and capable ot being extended through said catch toward said pneumatic control means in order to operate the latter to inilate the pneumatic tube when said bolt is operated to engage said catch and lock'the door, there being also manual means for shifting said bolt in order to release said door and allow same to be opened.

3. Control apparatus according to claim 2,

wherein the pneumatic control means includes a valve lhaving an operating member aligned with the hollow catch and bolt in closed position of the door, said bolt being capable of directly shitting said operating member through said catch in said closed position upon manipulation oi said bolt by the manual means.

4. Control apparatus according to claim 2, wherein the pneumatic control means includes a valve having an operating member adjacent t0 the hollow catch directly in the path of the ,bolt in closed position oi' the door, said bolt being capable of directly sluiting said operating member through said catch in said closed position upon manipulation of saidbolt by the manual means.

GEORGE FRANCOIS JAUBERT. 

